Abstract
Many studies have been published so far showing the significant role of oxidative stress in the pathogenesis of Alzheimer’s disease (AD), and the role of antioxidants as protective factors have been also shown in epidemiological survey. On this basis, clinical trials have been conducted in AD as well as in mild cognitive impairment (MCI) with different antioxidants, alone or in combination. In this chapter we review results or protocols of completed or ongoing studies with different molecules. Briefly, most of these studies are characterized by extremely poor comparability and the absence of a substantial clinical benefit but many aspects in their design and lack of fundamental prerequisites, such as pretreatment antioxidant status, cause several biases and do not offer a possibility to really understand if an antioxidant therapy can be effective both in preventing MCI conversion to dementia or in treating AD. Since oxidative stress is undoubtedly involved in AD, new RCTs with better defined rationale, quality of design, and clear outcomes are needed.
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Abad MJ, Bedoya LM, Bermejo P. An update on drug interactions with the herbal medicine Ginkgo biloba. Curr Drug Metab. 2010;11:171–81.
Andrieu S, Ousset PJ, Coley N, Ouzid M, Mathiex-Fortunet H, Vellas B, GuidAge study Group. GuidAge study: a 5-year double-blind, randomized trial of EGb 761 for the prevention of Alzheimer’s disease in elderly subjects with memory complaints. i. rationale, design and baseline data. Curr Alzheimer Res. 2008;5:406–15.
Baum L, Lam CW, Cheung SK, Kwok T, Lui V, Tsoh J, Lam L, Leung V, Hui E, Ng C, Woo J, Chiu HF, Goggins WB, Zee BC, Cheng KF, Fong CY, Wong A, Mok H, Chow MS, Ho PC, Ip SP, Ho CS, Yu XW, Lai CY, Chan MH, Szeto S, Chan IH, Mok V. Six-month randomized, placebo-controlled, double-blind, pilot clinical trial of curcumin in patients with Alzheimer’s disease. J Clin Psychopharmacol. 2008;28:110–3.
Birks J, Grimley Evans J. Ginkgo biloba for cognitive impairment and dementia. Cochrane Database Syst Rev. 2009;1:CD003120.
Chaturvedi RK, Beal MF. Mitochondrial approach for neuroprotection. Ann N Y Acad Sci. 2008;1147:395–412.
Commenges D, Scotet V, Renaud S, Jacqmin-Gadda H, Barberger-Gateau P, Dartigues JF. Intake of flavonoids and risk of dementia. Eur J Epidemiol. 2000;16:357–63.
Dai Q, Borenstein AR, Wu Y, Jackson JC, Larson EB. Fruit and vegetable juices and Alzheimer’s disease: the Kame Project. Am J Med. 2006;119:751–9.
Das DK, Mukherjee S, Ray D. Resveratrol and red wine, healthy heart and longevity. Heart Fail Rev. 2010;15:467–77.
De Kosky ST, Fitzpatrick A, Ives DG, Saxton J, Williamson J, Lopez OL, Burke G, Fried L, Kuller LH, Robbins J, Tracey R, Woolard N, Dunn L, Kronmal R, Nahin R, Furberg C, GEMS investigators. The Ginkgo Evaluation of Memory (GEM) study: design and baseline data of a randomized trial of Ginkgo biloba extract in prevention of dementia. Contemp Clin Trials. 2006;27:238–53.
Engelhart MJ, Geerlings MI, Ruitenberg A, van Swieten JC, Hofman A, Witteman JC, Breteler MM. Dietary intake of antioxidants and risk of Alzheimer’s disease. JAMA. 2002;287:3223–9.
Galasko DR, Peskind E, Clark CM, Quinn JF, Ringman JM, Jicha GA, Cotman C, Montine T, Thomas RG, Aisen P, Alzheimer’s Disease Cooperative Study. Antioxidants for AD: a randomized clinical trials with cerebrospinal fluid biomarker measures. Arch Neurol. 2012;69:836–41.
Grodstein F, Chen J, Willett WC. High-dose antioxidant supplements and cognitive function in community-dwelling elderly women. Am J Clin Nutr. 2003;77:975–84.
Gutzmann H, Hadler D. Sustained efficacy and safety of idebenone in the treatment of Alzheimer’s disease: update on a two-year double-blind multicentre study. J Neural Transm Suppl. 1998;54:301–10.
Hager K, Kenklies M, McAfoose J, Engel J, Munch GG. Alpha-lipoic acid as a new treatment option for Alzheimer’s disease – a 48 months follow-up analysis. J Neural Transm Suppl. 2007;72:189–93.
Hamaguchi T, Ono K, Yamada M. Curcumin and Alzheimer’s disease. CNS Neurosci Ther. 2010;16:285–97.
Harman D. Aging: a theory based on free radical and radiation chemistry. J Gerontol. 1956;11:298–300.
Ho RC, Cheung MW, Fu E, Win HH, Zaw MH, Ng A, Mak A. Is high homocysteine level a risk factor for cognitive decline in elderly? A systematic review, meta-analysis, and meta-regression. Am J Geriatr Psychiatry. 2011;19:607–17.
Jones RW. Dimebon disappointment. Alzheimers Res Ther. 2010;2:25.
Kennedy DO, Wightman EL, Reay JL, Lietz G, Okello EJ, Wilde A, Haskell CF. Effects of resveratrol on cerebral blood flow variables and cognitive performance in humans: a double-blind, placebo-controlled, crossover investigation. Am J Clin Nutr. 2010;91:1590–7.
Laurin D, Masaki KH, Foley DJ, White LR, Launer LJ. Midlife dietary intake of antioxidants and risk of late-life incident dementia: the Honolulu-Asia Aging Study. Am J Epidemiol. 2004;159:959–67.
Le WD, Jankovic J, Xie W, Appel SH. Antioxidant property of pramipexole independent of dopamine receptor activation in neuroprotection. J Neural Transm. 2000;107:1165–73.
Letenneur L, Proust-Lima C, Le Gouge A, Dartigues JF, Barberger-Gateau P. Flavonoid intake and cognitive decline over a 10-year period. Am J Epidemiol. 2007;165:1364–71.
Lotito SB, Frei B. Consumption of flavonoid-rich foods and increased plasma antioxidant capacity in humans: cause, consequence, or epiphenomenon? Free Radic Biol Med. 2006;41:1727–46.
Luchsinger JA, Wang MX, Shea S, Mayeux R. Antioxidant vitamin intake and risk of Alzheimer disease. Arch Neurol. 2003;60:203–8.
Maczurek A, Hager K, Kenklies M, Sharman M, Martins R, Engel J, Carlson DA, Munch G. Lipoic acid as an anti-inflammatory and neuroprotective treatment for Alzheimer’s disease. Adv Drug Deliv Rev. 2008;60:1463–70.
Mangialasche F, Polidori MC, Monastero R, Ercolani S, Camarda C, Cecchetti R, Mecocci P. Biomarkers of oxidative and nitrosative damage in Alzheimer's disease and mild cognitive impairment. Ageing Res Rev. 2009;8:285–305.
Mangialasche F, Solomon A, Winblad B, Mecocci P, Kivipelto M. Alzheimer's disease: clinical trials and drug development. Lancet Neurol. 2010;9:702–16.
Mangialasche F, Xu W, Kivipelto M, Costanzi E, Ercolani S, Pigliautile M, Cecchetti R, Baglioni M, Simmons A, Soininen H, Tsolaki M, Kloszewska I, Vellas B, Lovestone S, Mecocci P, AddNeuroMed Consortium. Tocopherols and tocotrienols plasma levels are associated with cognitive impairment. Neurobiol Aging. 2012;33:2282–90.
Mariani E, Polidori MC, Cherubini A, Mecocci P. Oxidative stress in brain aging, neurodegenerative and vascular diseases: an overview. J Chromatogr B Analyt Technol Biomed Life Sci. 2005;827:65–75.
Masaki HK, Losonczy KG, Izmirlian G, Foley DJ, Ross GW, Petrovitch H, Havlik R, White LR. Association of vitamin E and C supplement use with cognitive function and dementia in elderly men. Neurology. 2000;54:1265–72.
Morillas-Ruiz JM, Rubio-Perez JM, Albaladejo MD, Zafrilla P, Parra S, Vidal-Guevara ML. Effect of an antioxidant drink on homocysteine levels in Alzheimer's patients. J Neurol Sci. 2010;299:175–8.
Morris MC, Beckett LA, Scherr PA, Hebert LE, Bennett DA, Field TS, Evans DA. Vitamin E and vitamin C supplement use and risk of incident Alzheimer disease. Alzheimer Dis Assoc Disord. 1998;12:121–6.
Ono K, Hasegawa K, Yoshiike Y, Takashima A, Yamada M, Naiki H. Nordihydroguaiaretic acid potently breaks down preformed Alzheimer’s β-amyloid fibrils in vitro. J Neurochem. 2002;81:434–40.
Parasassi T, Brunelli R, Costa G, De Spirito M, Krasnowska E, Lundeberg T, Pittaluga E, Ursini F. Thiol redox transitions in cell signaling: a lesson from N-acetylcysteine. Scientific World Journal. 2010;10:1192–202.
Petersen RC, Thomas RG, Grundman M, Bennett D, Doody R, Ferris S, Galasko D, Jin S, Kaye J, Levey A, Pfeiffer E, Sano M, van Dyck CH, Thal LJ. Vitamin E and donepezil for the treatment of mild cognitive impairment. N Engl J Med. 2005;352:2379–88.
Praticò D, Clark CM, Liun F, Rokach J, Lee VY, Trojanowski JQ. Increase of brain oxidative stress in mild cognitive impairment: a possible predictor of Alzheimer disease. Arch Neurol. 2002;59:972–6.
Rinaldi P, Polidori MC, Metastasio A, Mariani E, Mattioli P, Cherubini A, Catani M, Cecchetti R, Senin U, Mecocci P. Plasma antioxidants are similarly depleted in mild cognitive impairment and in Alzheimer's disease. Neurobiol Aging. 2003;24:915–9.
Ringman JM, Cole GM, Tend E. Oral curcumin for the treatment of mild-to-moderate Alzheimer’s disease: tolerability and clinical and biomarker efficacy results of a placebo-controlled 24-week study. Proceedings of the International Conference of Alzheimer’s disease 2008, Chicago, abstract.
Sano M, Ernesto C, Thomas RG, Klauber MR, Schafer K, Grundman M, Woodbury P, Growdon J, Cotman CW, Pfeiffer E, Schneider LS, Thal LJ. A controlled trial of selegiline, alpha-tocopherol, or both as treatment for Alzheimer's disease. The Alzheimer's Disease Cooperative Study. N Engl J Med. 1997;336:1216–22.
Sies H. Oxidative stress: introductory remarks. In: Sies H, editor. Oxidative Stress. Orlando: Academic; 1985.
Smith M, Nunomura A, Lee HG, Zhu X, Moreira PI, Avila J, Perry G. Chronological primacy of oxidative stress in Alzheimer disease. Neurobiol Aging. 2005;26:579–80.
Snitz BE, O'Meara ES, Carlson MC, Arnold AM, Ives DG, Rapp SR, Saxton J, Lopez OL, Dunn LO, Sink KM, DeKosky ST, Ginkgo evaluation of memory (GEM) study investigators. Ginkgo biloba for preventing cognitive decline in older adults: a randomized trial. JAMA. 2009;302:2663–70.
Steele JW, Lachenmayer ML, Ju S, Stock A, Liken J, Kim SH, Delgado LM, Alfaro IE, Bernales S, Verdile G, Bharadwaj P, Gupta V, Barr R, Friss A, Dolios A, Wang R, Ringe D, Fraser P, Westaway D, St George-Hyslop PH, Szabo P, Relkin NR, Buxbaum JD, Glabe CG, Protter AA, Martins RR, Ehrlich ME, Petsko GA, Yue Z, Gandy S. Latrepirdine improves cognition and arrests progression of neuropathology in an Alzheimer's mouse model, Mol Psychiatry, 2012; [Epub ahead of print].
Stocker R. Vitamin E. Novartis Found Symp. 2007;282:77–87.
Su B, Wang X, Bonda D, Perry G, Smith M, Zhu X. Abnormal mitochondrial dynamics – a novel therapeutic target for Alzheimer’s disease? Mol Neurobiol. 2010;41:87–96.
Sung S, Yao Y, Uryu K, Yang H, Lee VM, Trojanowski JQ, Pratico D. Early vitamin E supplementation in young but not aged mice reduces Abeta levels and amyloid deposition in a transgenic model of Alzheimer's disease. FASEB J. 2004;18:323–5.
Thal LJ, Grundman M, Berg J, Ernstrom K, Margolin R, Pfeiffer E, FF M, Weiner E, Zamrini R, Thomas G. Idebenone treatment fails to slow cognitive decline in Alzheimer’s disease. Neurology. 2003;61:1498–502.
Vellas B, Coley N, Ousset PJ, Berrut G, Dartigues JF, Dubois B, Grandjean H, Pasquier F, Piette F, Robert P, Touchon J, Garnier P, Mathiex-Fortunet H, Andrieu S, GuidAge Study Group. Long-term use of standardised Ginkgo biloba extract for the prevention of Alzheimer's disease (GuidAge): a randomised placebo-controlled trial. Lancet Neurol. 2012;11:851–9.
Williams RJ, Spencer JP, Rice-Evans C. Flavonoids: antioxidants or signaling molecules? Free Radic Biol Med. 2004;36:838–49.
Yaffe K, Clemons TE, McBee WL, Lindblad AS. Impact of antioxidants, zinc and copper on cognition in the elderly: a randomized, controlled trial. Neurology. 2004;63:1705–7.
Zandi PP, Anthony JC, Khachaturian AS, Stone SV, Gustafson D, Tschanz JT, Norton MC, Welsh-Bohmer KA, Breitner JC. Reduced risk of Alzheimer disease in users of antioxidant vitamin supplements: the Cache County Study. Arch Neurol. 2004;61:82–8.
Zhang S, Hedskog L, Petersen CA, Winblad B, Ankarcrona M. Dimebon (latrepirdine) enhances mitochondrial function and protects neuronal cells from death. J Alzheimers Dis. 2010;21:389–402.
Zhu N, Huang TC, Yu Y, LaVoie EJ, Yang CS, Ho CT. Identification of oxidation products of (-)-epigallocatechin gallate and (-)-epigallocatechin with H(2)O(2). J Agric Food Chem. 2000;48:979–81.
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Mecocci, P., Polidori, M.C., Praticó, D. (2013). Antioxidant Clinical Trials in Mild Cognitive Impairment and Alzheimer’s Disease. In: Praticὸ, D., Mecocci, P. (eds) Studies on Alzheimer's Disease. Oxidative Stress in Applied Basic Research and Clinical Practice. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-62703-598-9_16
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DOI: https://doi.org/10.1007/978-1-62703-598-9_16
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